66003231800 has 48 divisors (see below), whose sum is σ = 167408202600. Its totient is φ = 24001174400.

The previous prime is 66003231787. The next prime is 66003231817. The reversal of 66003231800 is 813230066.

66003231800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14998535 + ... + 15002934.

Almost surely, 2^66003231800 is an apocalyptic number.

It is an amenable number.

66003231800 is an abundant number, since it is smaller than the sum of its proper divisors (101404970800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66003231800 is a wasteful number, since it uses less digits than its factorization.

66003231800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30001496 (or 30001487 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 66003231800 its reverse (813230066), we get a palindrome (66816461866).

The spelling of 66003231800 in words is "sixty-six billion, three million, two hundred thirty-one thousand, eight hundred".